News & Events


07 February 2019

Wondering why the Styx River looks different to usual?

ECan says "People have been reporting since July 2018 that the Styx River looks dirty and is lower than usual.

Environment Canterbury scientists went out to the river in October to investigate the state of the river further. The scientists travelled down parts of the river in boats and snorkelling. They observed that the water weed had not re-grown from the winter die-back at the usual rate, and that the flow of the river was stirring up fine sediment from the bed of the waterway. Observations of the river are continuing and we are monitoring the state of the water weed.

We have not yet been able to determine why the spring growth rate of water weeds is lower than normal. We are still investigating to determine the cause.

If you have any further observations of other causes of these phenomena, we would be interested to hear them."